Title

If the system is using LDAP for authentication or account information, the system must use a TLS connection using FIPS 140-2 approved cryptographic algorithms. (Cat II impact)

Discussion

LDAP can be used to provide user authentication and account information, which are vital to system security. Communication between an LDAP server and a host using LDAP requires protection.

Check Content

Check if the system is using NSS LDAP. # grep -v '^#' /etc/nsswitch.conf | grep ldap If no lines are returned, this vulnerability is not applicable. Check if NSS LDAP is using TLS. # grep '^ssl start_tls' /etc/ldap.conf If no lines are returned, this is a finding. Check if NSS LDAP TLS is using only FIPS 140-2 approved cryptographic algorithms. # grep '^tls_ciphers' /etc/ldap.conf If the line is not present, or contains ciphers not approved by FIPS 140-2, this is a finding.

Fix Text

Edit "/etc/ldap.conf" and add a "ssl start_tls" and "tls_ciphers" options with only FIPS 140-2 approved ciphers.

Additional Identifiers

Rule ID: SV-45996r1_rule

Vulnerability ID: V-22555

Group Title: GEN007980

Expert Comments

CCIs tied to check.

Controls tied to check. These are derived from the CCIs shown above.